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Showing posts from July 15, 2017

Base station controller (BSC)

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Base station controller (BSC) • Manages a number of BTSs • Uses the Abis interface to connect to BTSs • BSCs reserve radio frequencies for communication and manage handovers between BTSs Base station controller (BSC) • A BSC along with the BTSs connected to it and the mobile stations managed through it forms a base station system (BSS) • Also connected to an MSC in the networking and switching layer using an interface A • Processing of signals • Controlling signals to the connected BTSs and control of handover of signals from one BTS to another within a BSS • Control and handover of the signals from BSC to MSC Important functions performed by the BSC • Mapping the signals of a channel─ at given instant receives signals from a BTS at 16 kbps through Abis and interfaces them to an MSC at 16 kbps • Alternatively, may have to interface to a PSTN switching centre at 64 kbps through a fixed line network─ mapped by assigning a 16 kbps channel for 64 kbps signals and vice versa • Reserv...

Microsoft Wants to Use TV Frequencies for the Internet Using white space technology,

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Microsoft Wants to Use TV Frequencies for the Internet Using white space technology, which has its critics.   "White spaces" are intentional gaps between television channels on the wireless spectrum below 700 MHz put in place for buffering purposes, so important bands with actual traffic have some breathing room between each other. But if put to use for internet purposes, these bands have superior reach over regular Wi-Fi with the ability to get a connection over 6 miles away (10 kilometers), and can easily move through buildings or vegetation, two factors that make it intriguing for rural use. Microsoft has promoted the technology for years, launching trials in England , Kenya , Colombia and the Philippine s . Microsoft also hopes to invest in 12 projects in 12 states over the next year, with the goal of bringing broadband connectivity to two million people in rural America by July 4, 2022. In an interview with the Wall Street Journal , Microsoft P...